Year-End Closing Checklist: Close Your Books on 31 March

Closing the books on 31 March decides the numbers your bank, your accountant and the tax department will see for the whole year. Rushing it leaves wrong stock values, unreconciled input tax credit and duplicate invoices that take months to untangle. This checklist walks through the year-end close in the order that works for most Indian small businesses, with the key GST deadlines that follow it.

Why does the year-end close matter?

Through the year, small errors are tolerable: a payment posted to the wrong customer, a missing purchase bill, a stock count that is slightly off. At year end they become permanent. Your profit and loss statement and balance sheet are based on the closed books, income tax is computed from them, the GST annual return is reconciled against them, and next year's opening balances inherit any mistakes.

A good close does three things: it makes the year's figures complete, it makes them accurate, and it sets up the new year cleanly.

What should you finish before 31 March?

Some steps need to happen before the year actually ends.

1. Issue all pending invoices for goods supplied and services completed in the year.
2. Collect missing purchase bills from suppliers so expenses and credit are captured.
3. Issue pending credit and debit notes for returns, rate differences and discounts agreed during the year. See credit note under GST.
4. Follow up overdue receivables so year-end debtors are as low as possible.
5. Plan the stock count — date, teams, count sheets, cut-off rules.
6. Prepare the new invoice series for 1 April, since invoice numbers must be unique within a financial year.

The year-end closing checklist

Use this table as your working checklist. Most items take place in the first few weeks of April.

#	Task	What to check	Done
1	Sales cut-off	Every supply up to 31 March invoiced; no April invoices dated March	☐
2	Purchase cut-off	Goods received by 31 March recorded with bills or as accruals	☐
3	Physical stock count	Counted quantities agree with stock register; differences explained	☐
4	Stock valuation	Lower of cost and NRV; recoverable GST excluded from cost	☐
5	Bank reconciliation	Each account matched to the 31 March statement	☐
6	Cash count	Cash in hand counted and matched to cash book	☐
7	Debtors	Ledger balances confirmed with major customers; doubtful debts reviewed	☐
8	Creditors	Supplier statements matched; advances identified	☐
9	Output GST	Sales register matched to GSTR-1 and GSTR-3B	☐
10	Input tax credit	Purchase register matched to GSTR-2B; missing credit chased	☐
11	Blocked credit	Ineligible ITC moved to cost or expense	☐
12	Fixed assets	Additions, disposals and depreciation booked	☐
13	Accruals and prepayments	Unpaid March expenses booked; prepaid amounts carried forward	☐
14	Loans	Interest and principal balances agree with lender statements	☐
15	TDS	Deductions and deposits reconciled	☐
16	Trial balance	Debits equal credits; suspense account cleared	☐
17	Financial statements	P&L and balance sheet prepared and reviewed	☐
18	Backup and lock	Full data backup taken; closed period locked against edits	☐

How do you handle closing stock at year end?

Closing stock is the single biggest judgment in most small-business accounts, because it sets cost of goods sold and therefore profit.

1. Fix the count date (ideally 31 March after closing hours) and freeze movements.
2. Count by location, including godowns, branches, goods at job workers and goods in transit that you own.
3. Reconcile to the stock register and record differences, write-offs, damaged and expired items. The GST rules require the stock account to show goods lost, stolen, destroyed, written off or given as free samples.
4. Value at the lower of cost and net realisable value under AS 2, using your consistent cost formula; see stock valuation methods.
5. Review slow-moving and near-expiry items and write them down where NRV is below cost; see batch and expiry tracking.
6. Check input tax credit on goods destroyed or written off, since section 17(5)(h) blocks credit on such goods.

Worked example: the profit effect of the stock count

A Pune hardware trader's books before adjustments show:

• Net sales: ₹1,20,00,000
• Opening stock: ₹14,00,000
• Purchases: ₹98,00,000
• Book closing stock (from register): ₹18,50,000

At book stock, COGS = 14,00,000 + 98,00,000 − 18,50,000 = ₹93,50,000 and gross profit = ₹26,50,000 (22.08%).

The physical count finds:

• Shortages of ₹65,000 at cost (breakage and unrecorded samples).
• Obsolete fittings with cost ₹1,20,000 and NRV ₹40,000, so a write-down of ₹80,000.

Adjusted closing stock = 18,50,000 − 65,000 − 80,000 = ₹17,05,000.

Adjusted COGS = 14,00,000 + 98,00,000 − 17,05,000 = ₹94,95,000. Adjusted gross profit = 1,20,00,000 − 94,95,000 = ₹25,05,000 (20.88%).

Skipping the count would have overstated profit by ₹1,45,000. The shortages also need checking for input tax credit reversal with the accountant.

Which GST tasks follow the year-end close?

The financial year closes on 31 March, but several GST deadlines run into the following year.

Task	Time limit	Source
Claim any missed ITC for the year	30 November following the end of the financial year, or the annual return filing date if earlier	Section 16(4), as reproduced in CBIC Circular 237/31/2024-GST
Declare credit notes for the year's supplies (to reduce output tax)	30 November following the end of the financial year, or the annual return filing date if earlier	Section 34(2), as amended by Finance Act 2022
Correct errors in GSTR-1 data for the year	Within the time allowed under the CGST Act; check the current return amendment rules	CGST Act
File the annual return (GSTR-9, and 9C where applicable)	31 December of the following financial year, unless extended	GSTN GSTR-9 FAQ
Retain the year's records	72 months from the annual return due date	Section 36, CGST Act

The 30 November deadline is the one most often missed. During the close, compare your purchase register with GSTR-2B for the full year and chase suppliers whose invoices are missing — see GSTR-2B reconciliation. Anything not claimed by then is generally lost.

The annual return then reconciles what you declared during the year with your books; see GSTR-9 annual return. Retention is explained in GST record keeping rules.

How should you set up the new financial year?

1. Start the new invoice series (for example, INV/26-27/0001) for every document type: tax invoices, bills of supply, credit notes, debit notes, delivery challans.
2. Carry forward opening balances for bank, cash, debtors, creditors, stock and GST ledgers.
3. Update item master prices and rates if anything changed.
4. Lock the closed year in your software so no one can edit prior-year entries without approval and a log.
5. Take and store an off-site backup of the closed year.
6. Review recurring invoices and payment reminders for the new year's terms.

Billing Software by Betterwork, for example, lets you run a new numbering series for each financial year and export GSTR-ready reports for the year's reconciliation, which covers the billing side of this list. Stock counts, valuation judgments and statutory filings still need you and your accountant.

Who does what during the close?

In a small business, the owner, a bookkeeper and an outside accountant usually share the work. Agreeing roles early avoids the April scramble.

Role	Typical responsibilities
Owner	Approves write-offs and bad debts, attends stock count, signs off final figures
Bookkeeper / billing staff	Cut-off, invoice and bill entry, bank and party reconciliations, GST registers
Store or godown staff	Physical count, damaged and expired stock lists
Accountant / CA	Valuation review, depreciation, tax provisions, financial statements, filings

Set a simple timetable: count by 31 March or 1 April, reconciliations by mid-April, draft statements by the end of April or May, with GST reconciliation running in parallel. The exact dates depend on your audit and filing obligations, but a written timetable with names against each task is what separates a two-week close from a three-month one.

How should you review debtors, advances and provisions?

Debtor and creditor balances are where old errors hide. Before carrying them forward:

1. Age the debtors (0-30, 31-90, 91-180, over 180 days) and list every balance over your chosen threshold.
2. Send balance confirmations to major customers and suppliers and resolve differences — usually missing credit notes, unapplied receipts or duplicate bills.
3. Identify advances received from customers and paid to suppliers and keep them separate from ordinary balances; see advance payment under GST.
4. Decide on doubtful debts with your accountant. A provision or write-off changes profit, and the GST and income-tax treatment needs separate advice; see bad debts and GST.
5. Book provisions for known expenses relating to the year, such as audit fees or bonuses, even if the bill arrives later.

Worked example: ageing a debtor list

A Kolhapur distributor has total debtors of ₹18,40,000 on 31 March: ₹12,60,000 under 90 days, ₹4,30,000 between 91 and 180 days, and ₹1,50,000 over 180 days. The owner chases the ₹4,30,000 band before closing, finds ₹35,000 is an unrecorded customer return and issues the credit note, and agrees with the accountant how to treat the ₹1,50,000 that is unlikely to be collected.

Common mistakes

• Dating April invoices in March (or the reverse), breaking the cut-off and GST period.
• Skipping the physical count and using the book stock figure.
• Valuing stock including recoverable GST or at selling price.
• Not reconciling ITC with GSTR-2B before the 30 November cut-off.
• Carrying unreconciled suspense balances into the new year.
• Continuing the old invoice series in a way that repeats numbers within a financial year.
• Editing the closed year after statements are finalised, without a log or approval.
• No backup of the closed year before archiving or switching software.

Key takeaways

• Finish invoices, bills, credit notes and debit notes before 31 March.
• Count stock physically and value it at the lower of cost and NRV.
• Reconcile bank, cash, debtors, creditors and both output and input GST.
• Claim missed ITC by 30 November following the year (or annual return filing, if earlier).
• File the annual return by its due date and keep records for 72 months from that date.
• Start fresh invoice series, carry forward clean balances and lock the closed year.

This guide is general information, not tax advice. Rules last checked on 20 October 2026; confirm with your tax professional for your situation.